KCSAN: data-race in can_rcv_filter / can_rcv_filter (7)

Status: auto-obsoleted due to no activity on 2023/02/28 05:31
Subsystems: can
[Documentation on labels]
First crash: 1342d, last: 1311d
▶ ▼ Similar bugs (13)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream KCSAN: data-race in can_rcv_filter / can_rcv_filter (13) can 6 4 285d 302d 0/29 auto-obsoleted due to no activity on 2025/12/11 20:38
upstream KCSAN: data-race in can_rcv_filter / can_rcv_filter (11) can 6 5 515d 506d 0/29 auto-obsoleted due to no activity on 2025/04/25 09:54
upstream KCSAN: data-race in can_rcv_filter / can_rcv_filter can 6 3 2369d 2381d 0/29 auto-closed as invalid on 2020/04/11 00:08
upstream KCSAN: data-race in can_rcv_filter / can_rcv_filter (12) can 6 7 383d 418d 0/29 auto-obsoleted due to no activity on 2025/09/04 19:07
upstream KCSAN: data-race in can_rcv_filter / can_rcv_filter (2) can 6 1 1966d 1966d 0/29 auto-closed as invalid on 2021/04/14 07:16
upstream KCSAN: data-race in can_rcv_filter / can_rcv_filter (9) can 6 9 793d 853d 0/29 auto-obsoleted due to no activity on 2024/06/30 06:15
upstream KCSAN: data-race in can_rcv_filter / can_rcv_filter (8) can 6 9 1119d 1236d 0/29 auto-obsoleted due to no activity on 2023/08/09 14:18
upstream KCSAN: data-race in can_rcv_filter / can_rcv_filter (5) can 6 1 1542d 1542d 0/29 auto-closed as invalid on 2022/06/12 10:04
upstream KCSAN: data-race in can_rcv_filter / can_rcv_filter (4) can 6 6 1578d 1644d 0/29 auto-closed as invalid on 2022/05/07 18:40
upstream KCSAN: data-race in can_rcv_filter / can_rcv_filter (10) can 6 1 648d 648d 0/29 auto-obsoleted due to no activity on 2024/11/22 01:30
upstream KCSAN: data-race in can_rcv_filter / can_rcv_filter (3) can 6 2 1686d 1687d 0/29 auto-closed as invalid on 2022/01/19 00:57
upstream KCSAN: data-race in can_rcv_filter / can_rcv_filter (6) can 6 7 1388d 1465d 0/29 auto-obsoleted due to no activity on 2022/11/13 19:42
upstream KCSAN: data-race in can_rcv_filter / can_rcv_filter (14) can 6 23 139d 225d 0/29 auto-obsoleted due to no activity on 2026/05/05 03:26

Sample crash report:
==================================================================
BUG: KCSAN: data-race in can_rcv_filter / can_rcv_filter

read-write to 0xffff888101e47518 of 8 bytes by interrupt on cpu 0:
 deliver net/can/af_can.c:573 [inline]
 can_rcv_filter+0x171/0x4e0 net/can/af_can.c:590
 can_receive+0x182/0x1f0 net/can/af_can.c:663
 canfd_rcv+0xe3/0x180 net/can/af_can.c:702
 __netif_receive_skb_one_core net/core/dev.c:5482 [inline]
 __netif_receive_skb+0x8b/0x1b0 net/core/dev.c:5596
 process_backlog+0x23f/0x3b0 net/core/dev.c:5924
 __napi_poll+0x65/0x390 net/core/dev.c:6485
 napi_poll net/core/dev.c:6552 [inline]
 net_rx_action+0x37e/0x730 net/core/dev.c:6663
 __do_softirq+0xf2/0x2c7 kernel/softirq.c:571
 run_ksoftirqd+0x1f/0x30 kernel/softirq.c:934
 smpboot_thread_fn+0x308/0x4a0 kernel/smpboot.c:164
 kthread+0x1a9/0x1e0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

read-write to 0xffff888101e47518 of 8 bytes by interrupt on cpu 1:
 deliver net/can/af_can.c:573 [inline]
 can_rcv_filter+0x171/0x4e0 net/can/af_can.c:590
 can_receive+0x182/0x1f0 net/can/af_can.c:663
 canfd_rcv+0xe3/0x180 net/can/af_can.c:702
 __netif_receive_skb_one_core net/core/dev.c:5482 [inline]
 __netif_receive_skb+0x8b/0x1b0 net/core/dev.c:5596
 process_backlog+0x23f/0x3b0 net/core/dev.c:5924
 __napi_poll+0x65/0x390 net/core/dev.c:6485
 napi_poll net/core/dev.c:6552 [inline]
 net_rx_action+0x37e/0x730 net/core/dev.c:6663
 __do_softirq+0xf2/0x2c7 kernel/softirq.c:571
 run_ksoftirqd+0x1f/0x30 kernel/softirq.c:934
 smpboot_thread_fn+0x308/0x4a0 kernel/smpboot.c:164
 kthread+0x1a9/0x1e0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

value changed: 0x0000000000004729 -> 0x000000000000472a

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 18 Comm: ksoftirqd/1 Not tainted 6.1.0-syzkaller-14594-g72a85e2b0a1e-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
==================================================================
==================================================================
BUG: KCSAN: data-race in can_rcv_filter / can_rcv_filter

read-write to 0xffff888101e47a18 of 8 bytes by interrupt on cpu 0:
 deliver net/can/af_can.c:573 [inline]
 can_rcv_filter+0x171/0x4e0 net/can/af_can.c:590
 can_receive+0x182/0x1f0 net/can/af_can.c:663
 canfd_rcv+0xe3/0x180 net/can/af_can.c:702
 __netif_receive_skb_one_core net/core/dev.c:5482 [inline]
 __netif_receive_skb+0x8b/0x1b0 net/core/dev.c:5596
 process_backlog+0x23f/0x3b0 net/core/dev.c:5924
 __napi_poll+0x65/0x390 net/core/dev.c:6485
 napi_poll net/core/dev.c:6552 [inline]
 net_rx_action+0x37e/0x730 net/core/dev.c:6663
 __do_softirq+0xf2/0x2c7 kernel/softirq.c:571
 run_ksoftirqd+0x1f/0x30 kernel/softirq.c:934
 smpboot_thread_fn+0x308/0x4a0 kernel/smpboot.c:164
 kthread+0x1a9/0x1e0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

read-write to 0xffff888101e47a18 of 8 bytes by interrupt on cpu 1:
 deliver net/can/af_can.c:573 [inline]
 can_rcv_filter+0x171/0x4e0 net/can/af_can.c:590
 can_receive+0x182/0x1f0 net/can/af_can.c:663
 canfd_rcv+0xe3/0x180 net/can/af_can.c:702
 __netif_receive_skb_one_core net/core/dev.c:5482 [inline]
 __netif_receive_skb+0x8b/0x1b0 net/core/dev.c:5596
 process_backlog+0x23f/0x3b0 net/core/dev.c:5924
 __napi_poll+0x65/0x390 net/core/dev.c:6485
 napi_poll net/core/dev.c:6552 [inline]
 net_rx_action+0x37e/0x730 net/core/dev.c:6663
 __do_softirq+0xf2/0x2c7 kernel/softirq.c:571
 run_ksoftirqd+0x1f/0x30 kernel/softirq.c:934
 smpboot_thread_fn+0x308/0x4a0 kernel/smpboot.c:164
 kthread+0x1a9/0x1e0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

value changed: 0x00000000000015da -> 0x00000000000015dc

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 18 Comm: ksoftirqd/1 Not tainted 6.1.0-syzkaller-14594-g72a85e2b0a1e-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
==================================================================

Crashes (3):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2022/12/25 08:12 upstream 72a85e2b0a1e 9da18ae8 .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in can_rcv_filter / can_rcv_filter
2022/12/08 23:19 upstream 479174d402bc 1034e5fa .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in can_rcv_filter / can_rcv_filter
2022/11/24 10:51 upstream 4312098baf37 ff68ff8f .config console log report info ci2-upstream-kcsan-gce KCSAN: data-race in can_rcv_filter / can_rcv_filter
* Struck through repros no longer work on HEAD.